From patchwork Mon Dec 7 08:47:51 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhen Lei X-Patchwork-Id: 339158 Delivered-To: patch@linaro.org Received: by 2002:a02:85a7:0:0:0:0:0 with SMTP id d36csp2628247jai; Mon, 7 Dec 2020 00:50:10 -0800 (PST) X-Google-Smtp-Source: ABdhPJw1SfU2wCVoFOWPEoEoGbm1Ov6VBnz0Kcg6rxppYxaOHgXFvQwZuBXlBTfFul2ZvqyQlgr4 X-Received: by 2002:a17:906:144e:: with SMTP id q14mr6997231ejc.150.1607331010666; Mon, 07 Dec 2020 00:50:10 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1607331010; cv=none; d=google.com; s=arc-20160816; b=Lns8r8Rzp5EbnlrKHY0O9FPPamzqosEi52f8J2G6PUOoVr3U9KO+u0CSFVZfDLsxbb ZWUc5TQK/nsVqhcX4tW277FRfSvremvZ2Z+faR4y+n3jGRQQoavqGduN9tF9UPnsC0SC ZNHV8dDw9ULiupGMYTlpVBHDXhD4y0IoKSAk0ZL65ZJFzv8SLnBLdiWf2BcZAPO0zteL TAodHl19WyF8aUkfV1C0CmolF7pUDkvGloZTuAnr5o0id2NHxs9SmPZ6YRgAZ8wybn6z jd7tjb0be/aCp6qwaTl9atxlBvEqLM9rEHdZksaAa+yvDPbTgCKCGtlXexQ6nhf5RMdd ZSwQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :message-id:date:subject:cc:to:from; bh=kUrsETj7el4RQ6bGRU+VnAF+/Gvf9A+xKdu/vfTbAaU=; b=AZKnX4A+ZZnj/oSWs5FmptzEw1Kz1VOpyWQer0+0ANjhXkRz3RBGDDKToT8lqNYZPx JrYWtnpQNR1q3OY0Z/piZNiK2oCNV6XxwZn9NTdjQXElM5X/Li2QdWmZpXGxurSNfwUH 8GcW4AvbGmkKdvgRSapjzEYsFoWWXWThZ3s8vE39E0RAQi30w3z919ReNEcVQhEzsHam zQpW29Ve3eNKc6SSJ2rS2xkQBHsxjcZxspDQ3s70nmzf+OcVfpBa/uvN3cNSkxk1YfZy aA5xixqYUMMt/qBfjhfukZGve9UMnYqHxA85rDqsOkURMtSt+bu9AiEfKo1nZrZtjTzw IFSQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of devicetree-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=devicetree-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id 35si887838edm.126.2020.12.07.00.50.10; Mon, 07 Dec 2020 00:50:10 -0800 (PST) Received-SPF: pass (google.com: domain of devicetree-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of devicetree-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=devicetree-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726402AbgLGIs7 (ORCPT + 6 others); Mon, 7 Dec 2020 03:48:59 -0500 Received: from szxga05-in.huawei.com ([45.249.212.191]:9108 "EHLO szxga05-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726364AbgLGIs7 (ORCPT ); Mon, 7 Dec 2020 03:48:59 -0500 Received: from DGGEMS412-HUB.china.huawei.com (unknown [172.30.72.60]) by szxga05-in.huawei.com (SkyGuard) with ESMTP id 4CqH4n6GR9zLyDk; Mon, 7 Dec 2020 16:47:37 +0800 (CST) Received: from thunder-town.china.huawei.com (10.174.177.9) by DGGEMS412-HUB.china.huawei.com (10.3.19.212) with Microsoft SMTP Server id 14.3.487.0; Mon, 7 Dec 2020 16:48:06 +0800 From: Zhen Lei To: Lubomir Rintel , Pavel Machek , "Arnd Bergmann" , Rob Herring , linux-arm-kernel , devicetree , linux-kernel CC: Zhen Lei Subject: [PATCH v2 0/1] ARM: dts: mmp2-olpc-xo-1-75: clear the warnings when make dtbs Date: Mon, 7 Dec 2020 16:47:51 +0800 Message-ID: <20201207084752.1665-1-thunder.leizhen@huawei.com> X-Mailer: git-send-email 2.26.0.windows.1 MIME-Version: 1.0 X-Originating-IP: [10.174.177.9] X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org v1 --> v2: Update the patch description and subject. I'm going to describe the detailed analysis here, because I don't want the patch description to be too long. 0) make ARCH=arm CROSS_COMPILE=arm-linux-gnu- dtbs -j24 2>err.txt vim err.txt arch/arm/boot/dts/mmp2.dtsi:472.23-480.6: Warning (spi_bus_bridge): /soc/apb@d4000000/spi@d4037000: incorrect #address-cells for SPI bus also defined at arch/arm/boot/dts/mmp2-olpc-xo-1-75.dts:225.7-237.3 arch/arm/boot/dts/mmp2.dtsi:472.23-480.6: Warning (spi_bus_bridge): /soc/apb@d4000000/spi@d4037000: incorrect #size-cells for SPI bus also defined at arch/arm/boot/dts/mmp2-olpc-xo-1-75.dts:225.7-237.3 arch/arm/boot/dts/mmp2-olpc-xo-1-75.dtb: Warning (spi_bus_reg): Failed prerequisite 'spi_bus_bridge' 1) mmp2.dtsi is included by mmp2-olpc-xo-1-75.dts, and the content of ssp3 node is: arch/arm/boot/dts/mmp2.dtsi:472 ssp3: spi@d4037000 { compatible = "marvell,mmp2-ssp"; reg = <0xd4037000 0x1000>; clocks = <&soc_clocks MMP2_CLK_SSP2>; interrupts = <20>; #address-cells = <1>; #size-cells = <0>; <-------- #size-cells = <0> status = "disabled"; }; arch/arm/boot/dts/mmp2-olpc-xo-1-75.dts:225 &ssp3 { /delete-property/ #address-cells; <-------- #address-cells is deleted here /delete-property/ #size-cells; <-------- #size-cells is deleted here spi-slave; status = "okay"; ready-gpios = <&gpio 125 GPIO_ACTIVE_HIGH>; slave { compatible = "olpc,xo1.75-ec"; spi-cpha; cmd-gpios = <&gpio 155 GPIO_ACTIVE_HIGH>; }; }; 2) scripts/dtc/checks.c: check_spi_bus_bridge() requires that the values of both #address-cells and #size-cells must be zero, when the node have "spi-slave" property. if (get_property(node, "spi-slave")) spi_addr_cells = 0; if (node_addr_cells(node) != spi_addr_cells) FAIL(c, dti, node, "incorrect #address-cells for SPI bus"); if (node_size_cells(node) != 0) FAIL(c, dti, node, "incorrect #size-cells for SPI bus"); 3) But both #address-cells and #size-cells properties are deleted. So the return value of node_addr_cells(node) is 2, and the return value of node_size_cells(node) is 1. #define node_addr_cells(n) \ (((n)->addr_cells == -1) ? 2 : (n)->addr_cells) #define node_size_cells(n) \ (((n)->size_cells == -1) ? 1 : (n)->size_cells) 4) The checks in 2) failed, so the above 0) warnings is displayed. v1: Patch 5/6. https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg2341407.html Zhen Lei (1): ARM: dts: mmp2-olpc-xo-1-75: clear the warnings when make dtbs arch/arm/boot/dts/mmp2-olpc-xo-1-75.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) -- 1.8.3